Construction of a three-dimensional supramolecular framework based on an anionic cadmium(II) coordination network and protonated dipyridine organic cations

2018 ◽  
Vol 74 (8) ◽  
pp. 889-893
Author(s):  
Qian-Kun Zhou ◽  
Lin Wang ◽  
Dong Liu
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Title Compound ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Coordination Network ◽  
Hydrogen Bonding Interactions ◽  
Point Symbol

As a class of multifunctional materials, crystalline supramolecular complexes have attracted much attention because of their unique architectures, intriguing topologies and potential applications. In this article, a new supramolecular compound, namely catena-poly[4,4′-(buta-1,3-diene-1,4-diyl)dipyridin-1-ium [(μ4-benzene-1,2,4,5-tetracarboxylato-κ6 O 1,O 1′:O 2:O 4,O 4′:O 5)cadmium(II)]], {(C14H14N2)[Cd(C10H2O8)]} n or {(1,4-H2bpbd)[Cd(1,2,4,5-btc)]} n , has been prepared by the self-assembly of Cd(NO3)2·4H2O, benzene-1,2,4,5-tetracarboxylic acid (1,2,4,5-H4btc) and 1,4-bis(pyridin-4-yl)buta-1,3-diene (1,4-bpbd) under hydrothermal conditions. The title compound has been structurally characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. Each CdII centre is coordinated by six O atoms from four different (1,2,4,5-btc)4− tetraanions. Each CdII cation, located on a site of twofold symmetry, binds to four carboxylate groups belonging to four separate (1,2,4,5-btc)4− ligands. Each (1,2,4,5-btc)4− anion, situated on a position of \overline{1} symmetry, binds to four crystallographically equivalent CdII centres. Neighbouring CdII cations interconnect bridging (1,2,4,5-btc)4− anions to form a three-dimensional {[Cd(1,2,4,5-btc)]2−} n anionic coordination network with infinite tubular channels. The channels are visible in both the [1\overline{1}0] and the [001] direction. Such a coordination network can be simplified as a (4,4)-connected framework with the point symbol (4284)(4284). To balance the negative charge of the metal–carboxylate coordination network, the cavities of the network are occupied by protonated (1,4-H2bpbd)2+ cations that are located on sites of twofold symmetry. In the crystal, there are strong hydrogen-bonding interactions between the anionic coordination network and the (1,4-H2bpbd)2+ cations. Considering the hydrogen-bonding interactions, the structure can be further regarded as a three-dimensional (4,6)-connected supramolecular architecture with the point symbol (4264)(42687·84). The thermal stability and photoluminescence properties of the title compound have been investigated.

Synthesis, structure and photoluminescence properties of a three-dimensional cadmium(II) (4,5)-connected coordination network

2018 ◽  
Vol 74 (12) ◽  
pp. 1581-1585 ◽  
Author(s):  
Ni-Ya Li ◽  
Dong Liu
Keyword(s):  
Crystal Engineering ◽  
Self Assembly ◽  
Title Compound ◽  
Three Dimensional ◽  
Functional Materials ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Coordination Network ◽  
Potential Applications

The assembly of coordination polymers from metal ions and organic moieties is currently attracting considerable attention in crystal engineering due to their intriguing architectures and potential applications as functional materials. A new coordination polymer, namely poly[[μ2-trans-1,2-bis(pyridin-3-yl)ethylene-κ2 N:N′]bis(μ4-4,4′-oxydibenzoato-κ6 O:O,O′:O′′:O′′,O′′′)dicadmium(II)], [Cd2(C14H8O5)2(C12H10N2)] n or [Cd2(4,4′-OBB)2(3,3′-BPE)] n , has been synthesized by the the self-assembly of Cd(NO3)2·4H2O, 4,4′-oxydibenzoic acid (4,4′-H2OBB) and trans-1,2-bis(pyridin-3-yl)ethene (3,3′-BPE) under hydrothermal conditions. The title compound was structurally characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction analysis. Each CdII centre is coordinated by six carboxylate O atoms from four different 4,4′-OBB2− ligands and by one pyridyl N atom form a 3,3′-BPE ligand. Adjacent crystallographically equivalent CdII ions are bridged by 4,4′-OBB2− ligands, affording a two-dimensional [Cd(4,4′-OBB)] n net extending in the ac plane. Neighbouring [Cd(4,4′-OBB)] n nets are interlinked by 3,3′-BPE along the b axis to form a three-dimensional (3D) [Cd2(4,4′-OBB)2(3,3′-BPE)] n coordination network. In the network, each CdII centre is linked by four different 4,4′-OBB2− ligands and one 3,3′-BPE ligand. Meanwhile, each 4,4′-OBB2− ligand connects four separate CdII ions. Therefore, if the 4,4′-OBB2− ligands and CdII ions are considered as 4- and 5-connecting nodes, the structure of the title compound can be simplified as a 3D (4,5)-connected binodal framework with the rare (4462)(4466) TCS topology (Pearson, 1985; Blake et al., 2011). The thermal stability and photoluminescence properties of the title compound have also been investigated.

A new heteroleptic oxalate-based compound: poly[[2-(aminomethyl)pyridine]di-μ6-oxalato-chromium(III)potassium(I)]

2013 ◽  
Vol 70 (1) ◽  
pp. 12-15 ◽  
Author(s):  
Patrice Kenfack Tsobnang ◽  
Emmanuel Wenger ◽  
Siméon Ponou ◽  
Slimane Dahaoui ◽  
John Lambi Ngolui ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Three Dimensional ◽  
Monoclinic Space Group ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pyridine Ligands ◽  
Partial Overlap

The title compound, [KCr(C2O2)2(C6H8N2)]n, was obtained from aqueous solution and analyzed with single-crystal X-ray diffraction at 100 K. It crystallizes in the monoclinic space groupC2/cand displays a three-dimensional polymeric architecture built up by bimetallic oxalate-bridged CrIII–K helical chains linked through centrosymmetric K2O2units to yield a sheet-like alternatingP/Marrangement which looks like that of the previously described two-dimensional [NaCr(ox)2(pyim)(H2O)]·2H2O [pyim is 2-(pyridin-2-yl)imidazole; Leiet al.(2006).Inorg. Chem. Commun.9, 486–488]. The CrIIIions in each helix have the same chirality. The infinite neutral sheets are eclipsed with respect to each other and are held together by a hydrogen-bonding network involving 2-(aminomethyl)pyridine H atoms and oxalate O atoms. Each sheet gives rise to channels of Cr4K4octanuclear rings and each resultant hole is occupied by a pair of 2-(aminomethyl)pyridine ligands with partial overlap. The shortest Cr...Cr distance [5.593 (4) Å] is shorter than usually observed in the K–MIII–oxalate family.

Assembly of a Flexible 2,2ʹ-Oxydibenzoate and Silver(I) Ions to a Novel 3D Supramolecular Framework: Syntheses, Structure and Properties

2012 ◽  
Vol 67 (11) ◽  
pp. 1191-1196 ◽  
Author(s):  
Chong-Zhen Mei ◽  
Kai-Hui Li ◽  
Hai-Hua Li
Keyword(s):  
Hydrogen Bonding ◽  
Elemental Analysis ◽  
Self Assembly ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Supramolecular Architecture ◽  
Supramolecular Framework ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
X Ray

Self-assembly of silver(I) cations, flexible 2,2ʹ-oxydibenzoate anions (L2-), and 1,2-bis(4- pyridyl)ethane (bpa) ligands affords a new three-dimensional supramolecular architecture, {[Ag2(L)(bpa)2]⋅(H2O)4}n (1), which has been characterized by elemental analysis, IR, TGA, PXRD, and single-crystal X-ray diffraction. Complex 1exhibits layers further connected through hydrogen bonding and π...π stacking interactions. Its photoluminescence was also investigated.

Construction and photoluminescence properties of a three-dimensional ZnII coordination network based on naphthalene-1,4-dicarboxylic acid and 1,6-bis(pyridin-3-yl)-1,3,5-hexatriene

2018 ◽  
Vol 74 (9) ◽  
pp. 1053-1057 ◽  
Author(s):  
Qian-Kun Zhou ◽  
Lin Wang ◽  
Yun Xu ◽  
Ni-Ya Li
Keyword(s):  
Dicarboxylic Acid ◽  
Self Assembly ◽  
Three Dimensional ◽  
Square Lattice ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Pyridyl Ligands ◽  
Connected Node

In recent years, coordination polymers constructed from multidentate carboxylate and pyridyl ligands have attracted much attention because these ligands can adopt a rich variety of coordination modes and thus lead to the formation of crystalline products with intriguing structures and interesting properties. A new coordination polymer, namely poly[[μ2-1,6-bis(pyridin-3-yl)-1,3,5-hexatriene-κ2 N:N′](μ3-naphthalene-1,4-dicarboxylato-κ4 O 1,O 1′:O 4:O 4′)zinc(II)], [Zn(C12H6O4)(C16H14N2)] n , has been prepared by the self-assembly of Zn(NO3)2·6H2O, naphthalene-1,4-dicarboxylic acid (1,4-H2ndc) and 1,6-bis(pyridin-3-yl)-1,3,5-hexatriene (3,3′-bphte) under hydrothermal conditions. The title compound has been structurally characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. Each ZnII ion is six-coordinated by four O atoms from three 1,4-ndc2− ligands and by two N atoms from two 3,3′-bphte ligands, forming a distorted octahedral ZnO4N2 coordination geometry. Pairs of ZnII ions are linked by 1,4-ndc2− ligands, leading to the formation of a two-dimensional square lattice (sql) layer extending in the ab plane. In the crystal, adjacent layers are further connected by 3,3′-bphte bridges, generating a three-dimensional architecture. From a topological viewpoint, if each dinuclear zinc unit is considered as a 6-connected node and the 1,4-ndc2− and 3,3′-bphte ligands are regarded as linkers, the structure can be simplified as a unique three-dimensional 6-connected framework with the point symbol 446108. The thermal stability and solid-state photoluminescence properties have also been investigated.

A three-dimensional ZnII coordination network based on 5,5′-methylenebis(2,4,6-trimethylisophthalic acid) and 2,7-bis(1H-imidazol-1-yl)fluorene: synthesis, structure and luminescence properties

2019 ◽  
Vol 75 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Zhen Chen ◽  
Yanwen Sun ◽  
Zi-an Liu ◽  
Ning Wang ◽  
Xue Yang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Layer Structure ◽  
Three Dimensional ◽  
Luminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Crystallography ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Solvothermal Conditions

In recent years, coordination polymers constructed from multidentate carboxylate ligands and N-containing ligands have attracted much attention since these ligands can adopt a rich variety of coordination modes which can lead to crystalline products with intriguing structures and interesting properties. A new coordination polymer, namely poly[[diaqua[μ-2,7-bis(1H-imidazol-1-yl)fluorene-κ2 N 3:N 3′][μ-5,5′-methylenebis(3-carboxy-2,4,6-trimethylbenzoato)-κ2 O 1:O 1′]zinc(II)] hemihydrate], {[Zn(C23H22O8)(C19H14N4)(H2O)2]·0.5H2O} n , 1, was prepared by the self-assembly of Zn(NO3)2·6H2O with 5,5′-methylenebis(2,4,6-trimethylisophthalic acid) (H4BTMIPA) and 2,7-bis(1H-imidazol-1-yl)fluorene (BIF) under solvothermal conditions. The structure of 1 was determined by elemental analysis, single-crystal X-ray crystallography, powder X-ray diffraction, IR spectroscopy and thermogravimetric analysis. Each ZnII ion is six-coordinated by two O atoms from two H2BTMIPA2− ligands, by two N atoms from two BIF ligands and by two water molecules, forming a distorted octahedral ZnN2O4 coordination geometry. Adjacent ZnII ions are linked by H2BTMIPA2− ligands and BIF ligands, leading to the formation of a two-dimensional (2D) (4,4)-sql network, and intermolecular hydrogen-bonding interactions connect the 2D layer structure into the three-dimensional (3D) supramolecular structure. Each 2D layer contains two kinds of helices with the same direction, which are opposite in adjacent layers. The luminescence properties of complex 1 in the solid state have also been investigated.

A molecular crown analogue templated by Keggin polyanions: synthesis, structure, and electrochemical and luminescent properties

2015 ◽  
Vol 70 (8) ◽  
pp. 547-553 ◽  
Author(s):  
Chunyan Zhao ◽  
Huiyuan Ma ◽  
Haijun Pang ◽  
Yan Yu ◽  
Shaobin Li ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Luminescent Properties ◽  
Intermolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Hybrid Compound ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Elemental Analyses

AbstractA hybrid compound, [CuI4(bpmb)4][PWVI11WVO40] (1) (bpmb = 1,4-bis(pyrazol-1-ylmethyl)benzene), has been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis, infrared spectroscopy, elemental analyses and powder X-ray diffraction. In compound 1 crown-like [Cu4(bpmb)4]4+ macrocycles templated by Keggin-type [PWVI11WVO40]4− polyanions (abbreviated PW12) exist. Supramolecular layers are formed by intermolecular hydrogen bonding interactions of discrete crown-like [Cu4(bpmb)4]4+ macrocycles and [PWVI11WVO40]4− polyanions. The electrochemical and luminescence properties of compound 1 were investigated.

Two new isomeric zinc(II) metal–organic frameworks based on 1,5-bis(2-methyl-1H-imidazol-1-yl)pentane and 5-methylisophthalate ligands

2017 ◽  
Vol 73 (2) ◽  
pp. 78-83
Author(s):  
Xiong-Wen Tan ◽  
Heng-Feng Li ◽  
Chang-Hong Li
Keyword(s):  
Self Assembly ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Central Metal Atom ◽  
Central Metal ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Mixed Ligands ◽  
Metal Organic

Many factors, such as temperature, solvent, the central metal atom and the type of coligands, may affect the nature of metal–organic frameworks (MOFs) and the framework formation in the self-assembly process, which results in the complexity of these compounds and the uncertainty of their structures. Two new isomeric ZnIImetal–organic frameworks (MOFs) based on mixed ligands, namely, poly[[μ-1,5-bis(2-methyl-1H-imidazol-1-yl)pentane-κ2N3:N3′](μ-5-methylisophthalato-κ2O1:O3)zinc(II)], [Zn(C9H6O4)(C13H20N4)]n, (I), and poly[[μ-1,5-bis(2-methyl-1H-imidazol-1-yl)pentane-κ2N3:N3′](μ3-5-methylisophthalato-κ3O1:O1′:O3)(μ3-5-methylisophthalato-κ4O1:O1′:O3,O3′)dizinc(II)], [Zn2(C9H6O4)2(C13H20N4)]n, (II), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and thermogravimetric analysis. Complex (I) displays a two-dimensional layer net, while complex (II) exhibits a twofold interpenetrating three-dimensional framework. Both complexes show high stability and good fluorescence in the solid state at room temperature.

A three-dimensional twofold interpenetrated cobalt(II) MOF containing a flexible carboxylate-based ligand: synthesis, structure and magnetic properties

2018 ◽  
Vol 74 (4) ◽  
pp. 418-423 ◽  
Author(s):  
Yan-Yan An ◽  
Li-Ping Lu ◽  
Miao-Li Zhu
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Antiferromagnetic Coupling ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Design And Synthesis ◽  
Metal Organic ◽  
Cluster Representation ◽  
Methyl Benzene

The design and synthesis of coordination polymers (CPs) have attracted much interest due to the intriguing diversity of their architectures and topologies. The functional solid catena-poly[μ2-aqua-triaqua{μ4-5-[4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylato}{μ3-5-[4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylato}dicobalt(II)], [Co2(C16H10O7)2(H2O)4] n or [Co2(HL)2(μ2-H2O)(H2O)3] n , was synthesized successfully by self-assembly of CoII ions with 5-[(4-carboxyphenoxy)methyl]isophthalic acid (H3 L). The title compound was obtained under hydrothermal conditions and exhibits a twofold interpenetrated three-dimensional skeleton with hms 3,5-conn topology according to the cluster representation for valence-bonded metal–organic frameworks (MOFs). It has been characterized by single-crystal X-ray diffraction, IR spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis and susceptibility measurements. The antiferromagnetic coupling between adjacent CoII centres occurs via superexchange through the ligands.

scholarly journals Synthesis, Crystal Structure, and Characterization of the first Organic Cation Hexaoxoperiodate

2013 ◽  
Vol 9 (1) ◽  
pp. 1776-1782
Author(s):  
I. Wacharine ◽  
Wajda Sta Smirani ◽  
M. Rzaigui
Keyword(s):  
Title Compound ◽  
Three Dimensional ◽  
13C Nmr Spectroscopy ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network

The title compound is an organic-inorganic hybrid material. The single crystal X-ray diffraction investigation reveals that the studied compound crystallizes in the monoclinic system, space group P21/c with the following lattice parameters:               𝑎 = 7.551 (2) Å, 𝑏 = 6.694 (3) Å, 𝑐 = 14.783 (2) Å, β = 97.61 (2)° and 𝑍 = 2. The crystal lattice is composed of a discrete (H4IO6)− anion surrounded by piperazinium cations and water molecules. Complex hydrogen bonding interactions between the different chemical spices form a three-dimensional network. Room temperature IR, 13C NMR spectroscopy, thermogravimetric analysis and optical absorption of the title compound were recorded and analyzed. 

A three-dimensional supramolecular framework based on the interlinkage of an interpenetrating diamondoid coordination network

2017 ◽  
Vol 73 (11) ◽  
pp. 869-873 ◽  
Author(s):  
Yi-Xuan Hou ◽  
Dong Liu
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Water Molecules ◽  
Supramolecular Framework ◽  
X Ray Diffraction ◽  
Interpenetrating Networks ◽  
Hydrothermal Conditions ◽  
Dioic Acid ◽  
X Ray ◽  
Coordinated Water

In the development of coordination-driven crystalline materials, O- and N-atom donors from carboxylate and pyridyl-based ligands are widely used classes of multidentate bridging ligands composed of several terminal coordinating groups linked by either rigid or flexible spacers. The rigidity of the ligands can play a vital role in the determination of the structures formed. A new CdII supramolecular compound, namely poly[μ-adipato-κ2 O 1:O 4-μ-adipato-κ4 O 1,O 1′:O 4,O 4′-diaquabis[μ-1,4-bis(pyridin-4-yl)-1,3-butadiene-κ2 N:N′]dicadmium(II)], [Cd2(C6H8O4)2(C14H12N2)2(H2O)2] n , (I), has been synthesized by the self-assembly of Cd(NO3)2·4H2O, adipic acid (hexane-1,6-dioic acid; H2adp) and the dipyridyl ligand 1,4-bis(pyridin-4-yl)buta-1,3-diene (1,4-bpbd) under hydrothermal conditions. Single-crystal X-ray diffraction analysis reveals that each CdII centre is located in a distorted octahedral coordination environment, coordinated by one water O atom, three carboxylate O atoms from two different adp2− ligands and two N atoms from two different 1,4-bpbd ligands. The Cd(H2O) units are interconnected by the μ2,κ2-adp2−, μ2,κ4-adp2− and 1,4-bpbd ligands, which lie across centres of inversion, to give a 66-dia network. Large cavities within a single diamondoid network permit the mutual threefold interpenetration of crystallographically equivalent frameworks. Hydrogen-bonding interactions between the coordinated water molecules and adp2− carboxylate O atoms anchor the interpenetrating networks into a unique three-dimensional supramolecular structure. Topologically, taking the coordinated water molecules and CdII centres as nodes, the whole architecture can be simplified as a binodal (3,7)-connected supramolecular framework. The identity of (I) was further characterized by IR spectroscopy, elemental analysis, thermogravimetric analysis and powder X-ray diffraction. The solid-state photoluminescence properties of (I) were also investigated.

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